This isn't necessarily a "correction"; more of a request for clarification.
In the Direct Currents textbook PDF, page 237 in section 8.1, the PMMC meter movement figure shows a coil attached to a needle between two permanent magnets. It looks like the axis of the coil is perpendicular to the needle. Based on the symmetry of the situation, why would the needle ever move past the 50% mark? It seems like the fields would be fully aligned then.
Am I misunderstanding something? Or am I just taking the figure too literally?
In the Direct Currents textbook PDF, page 237 in section 8.1, the PMMC meter movement figure shows a coil attached to a needle between two permanent magnets. It looks like the axis of the coil is perpendicular to the needle. Based on the symmetry of the situation, why would the needle ever move past the 50% mark? It seems like the fields would be fully aligned then.
Am I misunderstanding something? Or am I just taking the figure too literally?